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Finding the Fourth Proportional to 724.71, 1,087.17 and 335.10

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Solution

The fourth proportional to 724.71, 1,087.17 and 335.10 is: 502.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.71 : 1,087.17 = 335.10 : x
  2. Step 2: Convert to fraction form
    724.71/1,087.17 = 335.10/x
  3. Step 3: Cross multiply
    724.71x = 1,087.17 × 335.10
  4. Step 4: Simplify right side
    724.71x = 364,310.67
  5. Step 5: Solve for x
    x = 364,310.67/724.71
  6. Step 6: Final answer
    x = 502.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.